Lyric discussion by duckgirlie 

I always thought it was more about not regreting what you haven't done, as much as regretting what you have. She's telling her "I did all these things, but they didn't make me happy. Don't necesarily think you're missing out on something."

exactly,its a song for those many people who sit at home thinking of the 'better life' somewhere else.The singer is saying that we make our own happinness wherever we are and all the ideas of the 'high life' are just a silly fantasy that will never give happiness

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